CN216900736U - Power equipment material aging test system considering multiple factors - Google Patents
Power equipment material aging test system considering multiple factors Download PDFInfo
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- CN216900736U CN216900736U CN202122946670.0U CN202122946670U CN216900736U CN 216900736 U CN216900736 U CN 216900736U CN 202122946670 U CN202122946670 U CN 202122946670U CN 216900736 U CN216900736 U CN 216900736U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
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Abstract
The utility model relates to a multi-factor power equipment material aging test system, which comprises an environment simulation test box, a long-term pressure-resistant test device, a high-voltage electrode test device, an electric control device and a safety protection device, wherein the environment simulation test box comprises a box body and an environment humidity and heat adjusting assembly connected with the box body, the high-voltage electrode test device and the safety protection device are arranged in the box body, the long-term pressure-resistant test device is introduced into the box body through a high-voltage wall bushing and is connected with the high-voltage electrode test device, the electric control device is respectively connected with the environment humidity and heat adjusting assembly and the long-term pressure-resistant test device, and the high-voltage electrode test device comprises a body aging high-voltage electrode device and a surface aging high-voltage electrode device. Compared with the prior art, the utility model has the advantages of comprehensive functions, high reliability and the like.
Description
Technical Field
The utility model belongs to the technical field of material aging tests, and particularly relates to a power equipment material aging test system considering multiple factors, which is applied to insulating materials such as rubber, plastics, resin and the like.
Background
With the rapid development of economy, the scale of a power grid is gradually enlarged, the range of operated power equipment and the coverage area of the power equipment are wider and wider, and once insulation failure occurs in power transmission equipment, serious consequences are easily caused. Grid operating statistics show that the vast majority of electrical equipment failures are related to the equipment's insulation system. The safety and the reliability of the primary equipment insulation system of the power system are ensured, and the safe and stable operation level of the power grid is directly determined. In order to avoid unnecessary equipment replacement and prevent electric power accidents caused by insulation failure, insulation aging evaluation and residual life prediction are carried out on a primary equipment insulation system, and the problems which are closely concerned and urgently needed to be solved by a power grid operation department are always solved. The existing operation data show that the aging of the polymer insulating material under long-term severe operation environment is an important reason for insulation failure. The insulating material is subjected to aging degradation under the action of factors such as electricity, heat, light, moisture and the like, and finally the electrical strength of the insulating material is reduced. The general aging process of the insulating material is actually a complex and gradual chemical reaction process. The aging detection of the polymer insulating material in the prior art also has the problems of incomplete consideration and low accuracy.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects in the prior art and provide a power equipment material aging test system which is comprehensive in function, high in reliability and capable of considering multiple factors.
The purpose of the utility model can be realized by the following technical scheme:
the utility model provides a consider power equipment material aging testing system of multifactor, includes environmental simulation test case, long term withstand voltage test device, high voltage electrode test device, electrically controlled device and safety arrangement, environmental simulation test case includes box and the wet hot adjusting part of environment of being connected with this box, high voltage electrode test device and safety arrangement set up in the box, the high voltage electrode test device of long term is worn the wall sleeve pipe through the high pressure and is introduced in the box, and with high voltage electrode test device connects, electrically controlled device connects environment wet hot adjusting part and long term withstand voltage test device respectively, high voltage electrode test device includes the aged high voltage electrode device of body and the aged high voltage electrode device of kneading dough.
Further, the environment humidity and heat adjusting assembly comprises a temperature scheduler, a humidity regulator, an air inlet device, an exhaust device and an environment detection device, wherein the temperature scheduler and the humidity regulator are respectively connected with the box body through the air inlet device, and the exhaust device and the environment detection device are respectively connected with the box body.
Further, the air inlet device comprises a pipeline and an electromagnetic valve arranged on the pipeline, and the electromagnetic valve is connected with the electric control device.
Further, the exhaust device comprises a centrifugal fan and a circulating air duct.
Further, the environment detection device comprises a temperature sensor, a humidity sensor, a voltage sensor, an air pressure sensor, an oil temperature sensor and a timer.
Further, the long-term withstand voltage test device comprises an intelligent control console, a voltage regulator, a test transformer, a capacitive voltage divider and a high-voltage protection resistor, wherein the intelligent control console is connected with the electric control device.
Furthermore, a temperature monitoring thermocouple capable of being connected with an upper computer or a remote terminal is installed on the test transformer.
Further, the aged high-voltage electrode device of body includes cylinder high-voltage electrode, cylinder telluric electricity field, electrode fixing device, spring closing device and compresses tightly elevating gear, cylinder high-voltage electrode and cylinder telluric electricity field all are provided with many pairs, place in on the electrode fixing device, it sets gradually from top to bottom to compress tightly elevating gear, spring closing device and electrode fixing device.
Furthermore, the surface aging high-voltage electrode device comprises a plurality of pairs of finger electrodes, an electrode mounting plate, an adjusting screw and an adjusting gasket, wherein the finger electrodes are mounted on the electrode mounting plate through the adjusting gasket and are fixed through the adjusting screw.
Furthermore, the electric control device comprises an electric measurement and control center and a communication interface which are connected, and the communication interface is connected with the environment humidity and heat adjusting component.
Compared with the prior art, the utility model has the following beneficial effects:
1. the test platform can provide a damp-heat environment and a high-voltage electric field in one test box at the same time, can provide a combined factor high-voltage test environment at one time, and can simultaneously perform surface aging and body aging tests on the material, so that the aging effect of the performance of the insulating material under the influence of electricity and environment is more concentrated and more effective; and meanwhile, the long-time voltage-withstanding test module is configured, so that the working conditions of the material and the product under the combined action of a strong electric field and a temperature and humidity environment can be simulated, and the performance change and the aging condition of the material and the product under multiple factors of electricity, heat and humidity can be researched.
2. The utility model is suitable for inspecting various performance indexes of products such as military industry, electric power, electronics, electrical appliances, communication, instruments, vehicles, plastic products, metal, food, chemistry, building materials, medical treatment, aviation, aerospace and the like in high-low temperature and strong electric field environments.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural diagram of a bulk-aged high voltage electrode assembly employed in an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a surface-aged high-voltage electrode device used in an embodiment of the present invention.
Detailed Description
The utility model is described in detail below with reference to the figures and specific embodiments. The present embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation manner and a specific operation process are given, but the scope of the present invention is not limited to the following embodiments.
The utility model provides a power equipment material aging test system considering multiple factors, which can be used for artificial climate multi-factor combined factor aging tests of insulating materials such as rubber, plastics, resin and the like.
As shown in fig. 1, the test platform of this embodiment includes a power equipment material aging test system considering multifactor, including environmental simulation test box, long-term withstand voltage test device 7, high voltage electrode test device and electrically controlled device 11, environmental simulation test box includes box 1 and the wet hot adjusting part of environment of being connected with this box 1, high voltage electrode test device sets up in box 1, long-term withstand voltage test device 7 passes through high-pressure wall bushing 6 and introduces in box 1 to be connected with high voltage electrode test device, electrically controlled device 11 connects environment wet hot adjusting part and withstand voltage long-term test device 7 respectively. The high-voltage electrode test device comprises a body aging high-voltage electrode test device 2 and a surface aging high-voltage electrode test device 3. The test platform can carry out an electric-humidity-heat combined factor aging test on the material, can provide a humidity-heat environment and a high-voltage electric field in one test box at the same time, can provide a combined factor high-voltage test environment at one time, and can carry out surface aging and body aging tests on the material at the same time, so that the aging effect of the performance of the insulating material under the influence of electricity and environment is more concentrated and more effective.
The box body 1 is used for providing a closed space to maintain an experimental environment. In this embodiment, the parameters of the box 1 are as follows:
the volume of the box body is as follows: 2.4m3
The size of the inner box is as follows: 1300mm × 1400mm × 1300mm (width × height × depth)
Temperature range: -40 ℃ to +180 ℃;
temperature fluctuation degree: not more than plus or minus 0.5 ℃ (no load);
temperature uniformity: not more than plus or minus 2.0 ℃ (no load);
temperature deviation: not more than plus or minus 2.0 ℃ (no load);
cooling rate: 0.7-1.0 deg.c/min (no load, average value in whole course);
the heating rate is as follows: 2.0 to 3.0 ℃/min (no-load, average value in the whole process);
humidity range: 20-98% of R.H. (20-85 ℃).
The environment damp and hot adjusting component comprises a temperature scheduler 8, a humidity regulator 9, an air inlet device 5, an exhaust device 10 and an environment detection device 12 which are all connected with an electric control device 11, the temperature scheduler 8 and the humidity regulator 9 are respectively connected with the box body 1 through the air inlet device 5, the temperature scheduler 8 adjusts air and then introduces the air into the box body 1, and the humidity regulator 9 adjusts air and pure water and then introduces the air into the box body 1 to form a damp and hot environment required by a test. The exhaust device 10 and the environment detection device 12 are respectively connected with the box body 1 to realize the environmental state adjustment through the electric control device 11.
Specifically, in this embodiment, the air intake device 5 includes a pipeline and an electromagnetic valve disposed on the pipeline, and the electromagnetic valve is connected to the electric control device 11. The exhaust device 10 includes a centrifugal fan and a circulating air duct, the circulating air duct includes a built-in air conditioning room, a centrifugal fan, a heater, an evaporator, and the like, and the air is forced to circulate by the high-power centrifugal fan, so that good temperature uniformity can be realized. The environment detection device 12 comprises a temperature sensor, a humidity sensor, a voltage sensor, an air pressure sensor, an oil temperature sensor, a timer and the like, which are all connected with the electric control device 11.
In this embodiment, long-term withstand voltage test device 7 adopts current test system, including intelligent control platform, voltage regulator, test transformer, capacitive voltage divider and high-voltage protection resistance, and the intelligent control platform is connected with electrically controlled device 11, and output voltage is adjustable in succession, and the stepping speed governing can step up. And the test transformer is provided with a temperature monitoring thermocouple which can be connected with an upper computer or a remote terminal. The voltage regulator adopts an oil-immersed column type voltage regulator.
The parameters of each part of the long-term withstand voltage test device 7 of the present example are as follows:
(1) intelligent control console
Power supply voltage: 220V;
power supply frequency: 50 HZ;
has the flashover protection function of the test sample;
the data storage function of the database is provided;
control loop voltage: 220V, 10A, manual and automatic control functions, and timing: 1S-9999 h, the voltage can be set arbitrarily, and the overcurrent action time is less than or equal to 200 ms; and has the constant pressure locking function;
the main technical parameters are as follows:
the total uncertainty of the voltage and current measuring system is less than 3 percent
Regulating the voltage range: continuously adjusting the voltage from 0kV (AC) to 150.0kV (AC) to the required test voltage, and setting the fineness: 0.1kV
Voltage holding time: setting a time range: 2 s-9999 h
Setting the fineness: 1s
Display precision: 1 s.
(2) Oil-immersed column type voltage regulator
Phase number: single phase
Frequency: 50Hz
A cooling mode: oil immersion circulation cooling
And (3) voltage regulation mode: electric voltage regulation
Rated capacity: 75kVA
Rated voltage: input voltage: 0.38kV output voltage: 0 to 0.42kV
Rated current: input current: 197.4A output Current: 0 to 178.6A
Waveform distortion rate: less than or equal to 3 percent
Initial voltage: less than or equal to 1.5 percent
Noise level: less than or equal to 60 dB.
(3) Test transformer
Phase number: a single phase;
frequency: 50 Hz;
a cooling mode: ONAN;
rated capacity: 75 kVA;
rated voltage: low voltage: 0.38kV high voltage: 150kV
Rated current: low-voltage current: 197.4A high voltage current: 0.5A
The transformer is allowed to operate for a long time (at least 1000h) under at least 90% of rated voltage and rated current, the temperature rise of a winding of the test transformer is less than or equal to 65K, and the temperature rise of an oil surface is less than or equal to 55K.
(4) Capacitive voltage divider
The model is as follows: OWF 150-500;
precision: 1 percent;
rated voltage is 150 kV;
high-voltage arm capacitance: 500 pF;
insulation level: withstand voltage for 1min under 1.1 times of rated voltage;
a base: has sufficient stability;
operating time: the same transformer;
(5) high-voltage protection resistor
Rated voltage: 150 kV;
rated resistance: 2.5k omega;
rated current: 0.5A;
operating time: and a transformer.
As shown in fig. 2, the body aging high voltage electrode device 2 of the present embodiment includes a plurality of pairs of cylindrical high voltage electrodes 201, cylindrical grounding electrodes 202, an electrode fixing device 203, a spring pressing device 204, and an electric or manual pressing lifting device 205, with or without oil grooves, wherein the cylindrical high voltage electrodes and the cylindrical grounding electrodes are provided with a plurality of pairs, and are placed on the electrode fixing device, the pressing lifting device, the spring pressing device, and the electrode fixing device are sequentially arranged from top to bottom, and a test piece 206 is disposed on the grounding electrodes 202.
As shown in fig. 3, the surface-aged high voltage electrode assembly 3 of the present embodiment includes a plurality of pairs of finger electrodes 301, an electrode mounting plate 302, adjusting screws 303, and adjusting shims 304, and the finger electrodes are mounted on the electrode mounting plate via the adjusting shims and fixed by the adjusting screws.
The electric control device 1 comprises an electric measurement and control center and a communication interface which are connected, the communication interface is connected with the environment humidity and heat adjusting assembly, and in the embodiment, the communication interface adopts an RS485 or RS232 communication interface and is used for collecting the temperature and the humidity in the test process in real time. The electrical measurement and control center sets an aging cycle program based on the acquired temperature and humidity data, acquires and records aging time and aging temperature and humidity data in the test process, and stores and centralizes the data to form a report; meanwhile, the on-off of the voltage regulator, the regulation of the voltage boosting and reducing speed of the voltage regulator, the setting of timer time, the setting of current protection level, timing operation and the like can be controlled and measured. The electric control device 1 can realize unmanned operation, only needs to monitor at regular time, and actions such as defrosting are set up in the debugging process, and can adopt a man-machine interaction mode and a touch mode for input and control.
In another embodiment, a safety protection device is further arranged in the box body, and the safety protection device comprises a power controller, an idle combustion preventing switch, a compressor overpressure protection switch, a compressor overheating protection switch, an experimental box overtemperature protector, a leakage switch, a line fuse, a buzzer, a ground protection terminal, a water shortage alarm and the like, so that the test safety is guaranteed, and the safe and reliable operation of the test platform is guaranteed.
The foregoing detailed description of the preferred embodiments of the utility model has been presented. It should be understood that numerous modifications and variations could be devised by those skilled in the art in light of the present teachings without departing from the inventive concepts. Therefore, the technical solutions available to those skilled in the art through logic analysis, reasoning and limited experiments based on the prior art according to the concept of the present invention should be within the scope of protection defined by the claims.
Claims (10)
1. The utility model provides a consider power equipment material aging testing system of multifactor, its characterized in that, includes environmental simulation test case, long term withstand voltage test device, high tension pole test device, electrically controlled device and safety arrangement, environmental simulation test case includes the box and the wet hot adjusting part of environment of being connected with this box, high tension pole test device and safety arrangement set up in the box, the wall sleeve pipe introduction is worn through the high pressure to the long term withstand voltage test device in the box, and with high tension pole test device connects, electrically controlled device connects environment wet hot adjusting part and long term withstand voltage test device respectively, high tension pole test device includes the aged high tension pole device of body and the aged high tension pole device of kneading dough.
2. The system for testing the material aging of the power equipment considering the multiple factors as claimed in claim 1, wherein the environmental humidity and heat regulation assembly comprises a temperature scheduler, a humidity regulator, an air intake device, an air exhaust device and an environmental detection device, the temperature scheduler and the humidity regulator are respectively connected with the box body through the air intake device, and the air exhaust device and the environmental detection device are respectively connected with the box body.
3. The multifactor-considered power equipment material aging test system of claim 2, wherein the air inlet device comprises a pipeline and an electromagnetic valve arranged on the pipeline, and the electromagnetic valve is connected with the electric control device.
4. The multifactor-considered power equipment material degradation testing system of claim 2, wherein the exhaust means comprises a centrifugal fan and a circulating air duct.
5. The multifactor-considered power equipment material degradation testing system of claim 2, wherein the environment detection means includes a temperature sensor, a humidity sensor, a voltage sensor, an air pressure sensor, an oil temperature sensor, and a timer.
6. The multifactor-considered power equipment material aging test system of claim 1, wherein the long-term withstand voltage test device comprises an intelligent console, a voltage regulator, a test transformer, a capacitive voltage divider and a high-voltage protection resistor, and the intelligent console is connected with the electric control device.
7. The multifactor-considered power equipment material degradation testing system of claim 6, wherein a temperature monitoring thermocouple capable of connecting with an upper computer or a remote terminal is installed on the testing transformer.
8. The system for testing the aging of the materials of the power equipment considering the multiple factors as claimed in claim 1, wherein the body aging high voltage electrode device comprises a cylindrical high voltage electrode, a cylindrical grounding electrode, an electrode fixing device, a spring pressing device and a pressing lifting device, wherein the cylindrical high voltage electrode and the cylindrical grounding electrode are provided with a plurality of pairs and placed on the electrode fixing device, and the pressing lifting device, the spring pressing device and the electrode fixing device are sequentially arranged from top to bottom.
9. The multifactor-considered power equipment material aging test system according to claim 1, wherein the surface-aged high voltage electrode device comprises a plurality of pairs of finger electrodes, an electrode mounting plate, adjusting screws and adjusting shims, and the finger electrodes are mounted on the electrode mounting plate through the adjusting shims and fixed by the adjusting screws.
10. The multifactor-considered power equipment material aging test system of claim 1, wherein the electrical control device comprises an electrical measurement and control center and a communication interface which are connected, and the communication interface is connected with the environmental moisture and heat regulation component.
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| CN202122946670.0U CN216900736U (en) | 2021-11-26 | 2021-11-26 | Power equipment material aging test system considering multiple factors |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116796652A (en) * | 2023-08-25 | 2023-09-22 | 国网浙江省电力有限公司电力科学研究院 | Prediction method for deterioration failure of sealing rubber gasket of distribution transformer in damp and hot area |
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2021
- 2021-11-26 CN CN202122946670.0U patent/CN216900736U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116796652A (en) * | 2023-08-25 | 2023-09-22 | 国网浙江省电力有限公司电力科学研究院 | Prediction method for deterioration failure of sealing rubber gasket of distribution transformer in damp and hot area |
| CN116796652B (en) * | 2023-08-25 | 2023-12-26 | 国网浙江省电力有限公司电力科学研究院 | Prediction method for deterioration failure of sealing rubber gasket of distribution transformer in damp and hot area |
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